Cobaltite and Sillimanite Physical Properties

Cobaltite

Sillimanite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.33.20-3.26

1 7.18

1.5 Fracture

UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic

Splintery

1.6 Cleavage

{100} Good, {010} Good, {001} Good

{010} perfect

1.7 Mohs Hardness

5.56-7.5

2 10

1.8 Chemical Composition

CoAsSAnthony et al , Handbook of mineralogy (2001)

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Cobaltite and Sillimanite Chemical Formula

While comparing Cobaltite and Sillimanite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Cobaltite and Sillimanite chemical formula.

Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Gems Found in America

Cobaltite Vs Diamond

Cobaltite Vs Diopside

Cobaltite Vs Datolite

Cobaltite and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cobaltite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cobaltite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Cobaltite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.